Flue gas desulfurization method and apparatus
Abstract
A combined furnace limestone injection and dry scrubber flue gas desulfurization (FGD) system collects solids from the flue gas stream in first particulate collection device located downstream of an outlet of a convection pass of the furnace and upstream of the dry scrubber. The collected solids are diverted to the dry scrubber feed slurry preparation system to increase sulfur oxide species removal efficiency and sorbent utilization. The level of lime in the feed slurry provided to the dry scrubber is thus increased, which enhances removal of sulfur oxide species in the dry scrubber. The decreased particulate loading to the dry scrubber helps maintain a desired degree of free moisture in the flue gas stream entering the dry scrubber, which enhances sulfur oxide species removal both in the dry scrubber and downstream particulate collector, normally a baghouse. 5 figs.
- Inventors:
- Issue Date:
- Research Org.:
- Babcock and Wilcox Co
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 672664
- Patent Number(s):
- 5795548
- Application Number:
- PAN: 8-611,605
- Assignee:
- McDermott Technology, Inc., New Orleans, LA (United States)
- DOE Contract Number:
- AC22-92PC92160
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 18 Aug 1998
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; 01 COAL, LIGNITE, AND PEAT; FLUE GAS; DESULFURIZATION; SORBENT INJECTION PROCESSES; DRY SCRUBBERS; SULFUR DIOXIDE; AIR POLLUTION CONTROL; BAGHOUSES; LIMESTONE; PARTICULATES; OPERATION
Citation Formats
Madden, D A, and Farthing, G A. Flue gas desulfurization method and apparatus. United States: N. p., 1998.
Web.
Madden, D A, & Farthing, G A. Flue gas desulfurization method and apparatus. United States.
Madden, D A, and Farthing, G A. Tue .
"Flue gas desulfurization method and apparatus". United States.
@article{osti_672664,
title = {Flue gas desulfurization method and apparatus},
author = {Madden, D A and Farthing, G A},
abstractNote = {A combined furnace limestone injection and dry scrubber flue gas desulfurization (FGD) system collects solids from the flue gas stream in first particulate collection device located downstream of an outlet of a convection pass of the furnace and upstream of the dry scrubber. The collected solids are diverted to the dry scrubber feed slurry preparation system to increase sulfur oxide species removal efficiency and sorbent utilization. The level of lime in the feed slurry provided to the dry scrubber is thus increased, which enhances removal of sulfur oxide species in the dry scrubber. The decreased particulate loading to the dry scrubber helps maintain a desired degree of free moisture in the flue gas stream entering the dry scrubber, which enhances sulfur oxide species removal both in the dry scrubber and downstream particulate collector, normally a baghouse. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 18 00:00:00 EDT 1998},
month = {Tue Aug 18 00:00:00 EDT 1998}
}